I also did debugging the python code and its in the fboRenderer.py line 33: self.rw.OpenGLInitContext(). So when the vtkGeneric/ExternalOpenGLRenderWindow calls the OpenGLInitContext. But that does not brings me any further, or do have a suggestion here?
I tried to write a CmakeLists.txt for that Test, but my skills do not seemed to be enough to get that running. I always get an error in fatal error: vtk_glew.h: No such file or directory 12 | #include <vtk_glew.h> …
Nevertheless many thanks again